| pyramidal eminence | A conical projection posterior to the vestibular window in the middle ear; it is hollow and contains the stapedius muscle. Synonym: pyramid of tympanum, pyramidal eminence, pyramis tympani. (05 Mar 2000) |
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| pyramidal fibres | The fibres that compose the pyramidal tract (corticospinalis). Synonym: fibrae corticospinales, corticospinal fibres, fibrae pyramidales. (05 Mar 2000) |
| pyramidal fracture | A fracture of the midfacial skeleton with the principal fracture lines meeting at an apex at or near the superior aspect of the nasal bones. Synonym: Le Fort II fracture. (05 Mar 2000) |
| pyramidal lobe of thyroid gland | <anatomy> An inconstant narrow lobe of the thyroid gland that arises from the upper border of the isthmus and extends upward, sometimes as far as the hyoid bone; it marks the point of continuity with the thyroglossal duct. Synonym: lobus pyramidalis glandulae thyroideae, Lallouette's pyramid, Morgagni's appendix, pyramid of thyroid. (05 Mar 2000) |
| pyramidal muscle | <anatomy, muscle> Origin, crest of pubis; insertion, lower portion of linea alba; action, makes linea alba tense; nerve supply, subcostal. Synonym: musculus pyramidalis, pyramidal muscle. (05 Mar 2000) |
| pyramidal muscle of auricle | <anatomy> An occasional prolongation of the fibres of the tragicus to the spina helicis. Synonym: musculus pyramidalis auriculae, Jung's muscle, pyramidal muscle of auricle. (05 Mar 2000) |
| pyramidal process | The portion of the palatine bone passing lateral and posterior from the angle formed by the vertical and horizontal plates. Synonym: processus pyramidalis. (05 Mar 2000) |
| pyramidal radiation | Corticospinal fibres passing from the cortex into the pyramid. Synonym: radiatio pyramidalis. (05 Mar 2000) |
| pyramidal tract | A massive bundle of fibres originating from pyramidal cells of various sizes in the fifth layer of the precentral motor (area 4), the premotor area (area 6), and to a lesser extent from the postcentral gyrus. Cells of origin in area 4 include the gigantopyramidal cells of Betz. Fibres from these cortical regions descend through the internal capsule, the middle third of the crus cerebri, and the ventral part of the pons to emerge on the ventral surface of the medulla oblongata as the pyramis. Continuing caudally, most of the fibres cross to the opposite side in the pyramidal decussation and descend in the dorsal half of the lateral funiculus of the spinal cord as the lateral pyramidal tract, which distributes its fibres throughout the length of the spinal cord to interneurons of the zona intermedia of the spinal gray matter. In the (extremity-related) spinal cord enlargements, fibres also pass directly to motoneuronal groups that innervate distal extremity muscles subserving particular hand-and-finger or foot-and-toe movements. The uncrossed fibres form a small bundle, the anterior pyramidal tract, which descends in the anterior funiculus of the spinal cord and terminates in synaptic contact with interneurons in the medial half of the anterior horn on both sides of the spinal cord. Interruption of the pyramidal tract at or below its cortical origin causes impairment of movement in the opposite body-half, especially severe in the arm and leg; characterised by muscular weakness, spasticity and hyperreflexia, and a loss of discrete finger and hand movements. Babinski's sign is associated with this condition of hemiplegia. Synonym: tractus corticospinalis, tractus pyramidalis, corticospinal tract. (05 Mar 2000) |
| pyramidal tractotomy | May be mesencephalic (pedunculotomy or crusotomy), medullary (medullary pyramidotomy), or spinal (spinal pyramidotomy). (05 Mar 2000) |
| pyramidale | Synonym: triquetral bone. Origin: Mod. L. (05 Mar 2000) |
| pyramidalis | <anatomy, muscle> Origin, crest of pubis; insertion, lower portion of linea alba; action, makes linea alba tense; nerve supply, subcostal. Synonym: musculus pyramidalis, pyramidal muscle. (05 Mar 2000) |
| pyramidally | Like a pyramid. Source: Websters Dictionary (01 Mar 1998) |
| pyramidic | Of or pertaining to a pyramid; having the form of a pyramid; pyramidal. " A pyramidical rock." . "Gold in pyramidic plenty piled." . Pyramid"ically, Pyramild"icalness. Source: Websters Dictionary (01 Mar 1998) |
| pyramidical | Of or pertaining to a pyramid; having the form of a pyramid; pyramidal. " A pyramidical rock." . "Gold in pyramidic plenty piled." . Pyramid"ically, Pyramild"icalness. Source: Websters Dictionary (01 Mar 1998) |
Synonyms :
Synonyms : Pyrrolo-Iminoquinones, Pyrrolo Iminoquinones
Synonyms :
Synonyms :
Synonyms : Pyruvic Aldehyde, Aldehyde, Pyruvic
| pyrimidine |
A heterocyclic aromatic compound containing nitrogen found in nucleic acids. See purine.
출처: xenon.che.ilstu.edu/genchemhelphomepage/glossary/p...
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| pyridoxine |
a form of vitamin B that helps prevent peripheral neuropathy when used with certain drugs.
출처: www.sfaf.org/treatment/beta/b38/b38glos.html
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| pyramidal tract |
Carries the voluntary muscle messages from the brain.
출처: www.condell.org/libertyville/neurosurgery/neurolog...
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| py |
Zhang Qian leaving emperor Han Wudi, for his expedition to Central Asia from 138 to 126 BCE, Mogao Caves mural, 618-712 CE. Zhang Qian (Chinese:張騫; died 113 BCE) was a Chinese explorer and imperial envoy in the 2nd century BCE, during the time of the Han Dynasty. ... Characters for Zheng He. ...
출처: www.nationmaster.com/encyclopedia/List-of-Chinese-...
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| py- |
Zhang Qian leaving emperor Han Wudi, for his expedition to Central Asia from 138 to 126 BCE, Mogao Caves mural, 618-712 CE. Zhang Qian (Chinese:張騫; died 113 BCE) was a Chinese explorer and imperial envoy in the 2nd century BCE, during the time of the Han Dynasty. ... Characters for Zheng He. ...
출처: www.nationmaster.com/encyclopedia/List-of-Chinese-...
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| Py | crested gray-and-red bird of southwest United States and Mexico |
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| Py | king of Epirus |
| Py | a division of lower plants comprising unicellular and biflagellate algae that form starchy compounds |
| Py | epiphytic or lithophytic or terrestrial ferns of tropical Old World |
| Py | east Asian fern having fronds shaped like tongues |
| Py | small genus of chiefly Asiatic parasitic shrubs |
| Py | shrub of southeastern United States parasitic on roots of hemlocks having sparse spikes of greenish flowers and pulpy drupes |
| Py | fruit trees native to the Old World: pears |
| Py | Old World tree having sweet gritty-textured juicy fruit |
| Py | a colorless acid formed as an important intermediate in metabolism or fermentation |
| Py | Greek philosopher and mathematician who proved the Pythagorean theorem |
| Py | of or relating to Pythagoras or his geometry |